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python Programming Glossary: dueWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python according to the parameters you pass to it. It's an issue due to backwards compatibility in Python type works this way type..
What is different between all these OpenCV Python interfaces? http://stackoverflow.com/questions/10417108/what-is-different-between-all-these-opencv-python-interfaces native Python objects like lists tuples dictionary etc. So due to this NumPy support you can do any numpy operation here. NumPy..
Python subprocess readlines() hangs http://stackoverflow.com/questions/12419198/python-subprocess-readlines-hangs share improve this question I assume you use pty due to reasons outlined in Q Why not just use a pipe popen all other..
http://stackoverflow.com/questions/15112125/if-x-or-y-or-z-blah if that is False the expression y 1 is tested. This is due to operator precedence . The or operator has a lower precedence..
Python - How do I pass a string into subprocess.Popen (using the stdin argument)? http://stackoverflow.com/questions/163542/python-how-do-i-pass-a-string-into-subprocess-popen-using-the-stdin-argument stdin.write stdout.read or stderr.read to avoid deadlocks due to any of the other OS pipe buffers filling up and blocking..
Python float - str - float weirdness http://stackoverflow.com/questions/1778368/python-float-str-float-weirdness and float '0.47' can be 0.46999999999999997 . This is due to the way floating point number are represented see this wikipedia..
Why is numpy's einsum faster than numpy's built in functions? http://stackoverflow.com/questions/18365073/why-is-numpys-einsum-faster-than-numpys-built-in-functions timings scale nearly linearly with system size and are not due to the small overhead incurred in the numpy functions if statements..
How do I execute a program from python? os.system fails due to spaces in path http://stackoverflow.com/questions/204017/how-do-i-execute-a-program-from-python-os-system-fails-due-to-spaces-in-path do I execute a program from python os.system fails due to spaces in path I have a python script that needs to execute..
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python improve this question Warning timeit results may vary due to differences in hardware or version of Python. Below is a..
What exactly do “u” and “r”string flags in Python, and what are raw string litterals? http://stackoverflow.com/questions/2081640/what-exactly-do-u-and-rstring-flags-in-python-and-what-are-raw-string-litte slashes mostly work fine on Windows too and imperfect due to the except clause above . r'...' is a byte string in Python..
http://stackoverflow.com/questions/3684484/peak-detection-in-a-2d-array of each column and row can't look in one direction due to the shape of the paw . This seems to 'detect' the location..
Python list comprehension rebind names even after scope of comprehension. Is this right? http://stackoverflow.com/questions/4198906/python-list-comprehension-rebind-names-even-after-scope-of-comprehension-is-thi write new code I just occasionally find very weird errors due to rebinding even now that I know it's a problem. I need to..
Stop reading process output in Python without hang? http://stackoverflow.com/questions/4417962/stop-reading-process-output-in-python-without-hang top print process the same as the first one. It hanged due to readlines Its returning should be like this top 05 31 15..
Redirect stdout to a file in Python? http://stackoverflow.com/questions/4675728/redirect-stdout-to-a-file-in-python output to a file rather than stdout to prevent failure due to IOError. Currently I employ nohup to redirect output to a..
use of “global” keyword in python http://stackoverflow.com/questions/4693120/use-of-global-keyword-in-python will give you locally defined locally defined In addition due to the nature of python you could also use global to declare..
Regular expression to detect semi-colon terminated C++ for & while loops http://stackoverflow.com/questions/524548/regular-expression-to-detect-semi-colon-terminated-c-for-while-loops P balanced part doesn't work any more since it won't match due to the fact that the text inside the parenthesis is different..
http://stackoverflow.com/questions/5276967/python-in-xcode-4-or-xcode-5 find that these instructions no longer work or are unclear due to changes in Xcode updates please let me know. I will make..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python that scanf and gets are both UNSAFE and should NOT BE USED due to potential of buffer overflow. So I wrote this iteration using.. pretty far from wc performance I'm pretty sure this is due to the fact that wc examines each character without any memory..
Safety of Python 'eval' For List Deserialization http://stackoverflow.com/questions/1112665/safety-of-python-eval-for-list-deserialization is Python 2.5 so json and ast aren't available. Due to the App Engine environment no C modules are allowed and cPickle..
http://stackoverflow.com/questions/11368486/openmp-and-python parallel processing openmp share improve this question Due to GIL there is no point to use threads for CPU intensive tasks..
How to timeout function in python, timeout less than a second http://stackoverflow.com/questions/11901328/how-to-timeout-function-in-python-timeout-less-than-a-second and Python sometimes gets himself to backtracking hell. Due to this I need to protect it with some kind of timeout. Problems..
Python Google App Engine Image object http://stackoverflow.com/questions/13810823/python-google-app-engine-image-object and not use my image server as proposed by @voscausa. Due to the fact that my object was parsed by jinja2 templating it..
Python - Working around memory leaks http://stackoverflow.com/questions/1641231/python-working-around-memory-leaks to find I've look at the other threads on memory leaks . Due to time constraints I have had to give up on finding the leak..
Django signals vs. overriding save method http://stackoverflow.com/questions/170337/django-signals-vs-overriding-save-method entire sub tree of objects before it and they are deleted. Due to the use of signals users don't have to add or modify save..
Ensuring a single instance of an application in Linux http://stackoverflow.com/questions/220525/ensuring-a-single-instance-of-an-application-in-linux application is running at any given time on the machine. Due to the nature of the application running more than once doesn't..
A simple Python deployment problem - a whole world of pain http://stackoverflow.com/questions/2741507/a-simple-python-deployment-problem-a-whole-world-of-pain setup.py help python setup.py help commands Loose ends Due to the broad nature of the question this answer is necessarily..
How to expire session due to inactivity in Django? http://stackoverflow.com/questions/3024153/how-to-expire-session-due-to-inactivity-in-django is unavoidable due to the use of SESSION_COOKIE_AGE. Due to the way cookies work SESSION_EXPIRE_AT_BROWSER_CLOSE and..
Are there any static analysis tools for Python? http://stackoverflow.com/questions/35470/are-there-any-static-analysis-tools-for-python this question pylint is the best such tool I've found. Due to Python's nature it's difficult to statically analyze it but..
Encoding error in Python with Chinese characters http://stackoverflow.com/questions/3883573/encoding-error-in-python-with-chinese-characters to U E28B but is now mapped to U 28804. The euro You said Due to the data I can't share the whole line but what I was calling..
All possible paths from one node to another in a directed tree (igraph) http://stackoverflow.com/questions/3971876/all-possible-paths-from-one-node-to-another-in-a-directed-tree-igraph also provided that the graph does not contain any cycles. Due to these two reasons infinite list of paths is impossible. What..
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII http://stackoverflow.com/questions/4198804/how-to-reliably-guess-the-encoding-between-macroman-cp1252-latin1-utf-8-and validates as UTF 8 then you can safely assume it is UTF 8. Due to UTF 8's strict validation rules false positives are extremely..
Don't show Python raise-line in the exception stack http://stackoverflow.com/questions/4419785/dont-show-python-raise-line-in-the-exception-stack exception stack raise share improve this question Due warning modifying the behaviour of the interpreter is generally..
Django: Increment blog entry view count by one. Is this efficient? http://stackoverflow.com/questions/447117/django-increment-blog-entry-view-count-by-one-is-this-efficient views F 'views' 1 print n or 0 'items updated' Due to the way that django executes queries lazily this results..
http://stackoverflow.com/questions/4502656/how-to-sort-my-paws dataset. This is a common problem in image recognition. Due to the high dimensionality of the input data and the somewhat..
Design pattern used in projects http://stackoverflow.com/questions/5039196/design-pattern-used-in-projects and found boost to be a good choice to start. UPDATE Due to a nice post on java which describe design pattern Examples..
Is it possible to generate and return a ZIP file with App Engine? http://stackoverflow.com/questions/583791/is-it-possible-to-generate-and-return-a-zip-file-with-app-engine on the ability to generate a ZIP file and return it. Due to the distributed nature of App Engine from what I can tell..
Is this an appropriate use of python's built-in hash function? http://stackoverflow.com/questions/7646520/is-this-an-appropriate-use-of-pythons-built-in-hash-function is designed for speed and maps into a 64bit space. Due to the birthday paradoxon this means you'll likely get a collision..
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